Trigger motor



vJ1u1ne12,1923. 1,4533% H. o. RUSSELL ET AL TRIGGER MOTOR Filed June 9, 1922 Nozucq Patented June 12, 1923.

Mrs s HERBERT O. RUSSELL, F LOS ANGELES, CALIFORNIA, AND LAURENCE J. SCHEBEN, OF DAYTON, OHIO.

TRIGGER MOTOR.

Application filed June 9, 1922. Serial No. 567,084.

T 0 all 107mm it may concern.

Be it known that we. Hnnnan'r 0. RUssELL and LAURENCE J. SCHEBI-ZN, citizens of the l nited States, residing, respectively at Los Angeles and Dayton. in the counties of Los Angeles and Montgomery and States of California and Ohio. have invented certain new and useful Improvements in Trigger Motors, of which the following is a specification.

This invention relates to trigger motors for use on fifty calibre or 30 calibre Browning machine guns when operated by the Nel' son gun control or any other type of gun control in which the operation is similar.

The object of the invention is to produce a simple and reliable trigger motor the main purpose of which is to obtain a maximum movement of the trigger operating slide with a minimum movement of the plunger which causes the operation of said slide, permitting the slide to move inwardly when the plunger has been forced to the limit of its movement, thus preventing the slide from being moved outwardly when the plunger is retracted to its original or normal position.

With the above and other objects in view, the invention consists in the novel construction, combination and arrangement herein fully described, illustrated and claimed,

In the accompanying drawings;

Figure l is a side elevation partly in section of the trigger motor.

Figure 2 is a longitudinal section through the same taken at a right angle to Figure 1.

The trigger motor of this invention comprises a suitable housing A having pivotally connected thereto as shown, an operating lever 1 which is adapted to be moved by an impulse cable (not shown) leading to an impulse generator of any kind, (not shown).

In the working stroke of the lever l, the lever actuates a plunger 2 against the tension of a coiled spring 3 which surrounds the plunger and operates to return the plunger to its normal position as shown in Figure 2.

Carried by the inner end of the plunger 2 is a cam carrier or cage 4 comprising a cam stop 5 and a bottom closure or plate 6.

Within the carrier or cage 4 there is a floating cam 7 having a slot therein through which passes aretaining pin 8, the slot in the cam being of such size as to admit of a limited movement of the cam for a purpose which wil-l appear,

Operating substantially at a right angle to the path of movement of the plunger 2 is a trigger operating slide 9 which is pressed inward and normally held to the inner limit of its movement by means of an expansion spring 10, the latter being confined between a fixed shoulder in the housing of the motor and an arm 11 of the slide 9 as shown in Figure 2. The cam is formed with a notch or shoulder 12 which cooperates with a shoulder 13 on the slide 9.

The operation of the mechanism is as follows; When the plunger 2 moves inwardly due to a pull upon the lever 1 by the impulse cable, the cam 7 is moved forward due to the pressure brought to bear upon it by the cam pin 8. Inasmuch as the notch at the top of the cam is en aged with the projection on the slide 9, t ie cam as a whole can move bodily forward and consequently partially rotates about the cam pin 8. This partial rotation brings the cam surface upon the bottom of the cam into action and forces the upper end of the cam out of the cam retainer of the carrier 4. This forces the slide 9 outwardly of the housing and operates the trigger mechanism of the machine gun. The slide 9 reaches its foremost position before the plunger 2 has completed its full stroke, and the cam has come against the cam stop 5. Inasmuch as the cam can further rotate, the notch on the top of the cam slips off of the projection on the slide 9 when the plunger completes the last part of its movement. The slipping of the cam from the slide brings the bevelled portion of the slide 9 against the side of the cam rotating the latter backwards and downwards into place and thus allowing the slide to return to its original or normal position under the action of the spring 10. The pull on the lever 1 being released, the plunger spring 3 drives the plunger back to its original position allowing the cam to again pass underneath the slide 9 and the notch upon the cam to become engaged with the projection on the slide. The mechanism is then ready for the necessary pull on the cable.

By reason of the construction described, a maximum movement of the slide 9 is obtained with a minimum movement of the plunger 2 and the slide 9 is permitted to drop down into the carrier or retainer when the plunger has been forced to the limit of its movement, for the purpose of preventing the slide 9 from being moved out when the plunger is working back to its original position.

Having thus described our invention, We claim:

1. In a trigger motor for machine guns, the combination of a plunger, a plunger operating member. a trigger operating slide movable in a path atan angle to the plunger, and a floating cam actuated by the plunger and operating with a thrust on the trigger operating slide.

2. In a trigger motor for machine guns, the combination of a plunger, :1 plunger operating member, a trigger operating slide movable in a path at an angle to the plunger, a cam retainer attached to the plunger, and a floating cam actuated by the plunger and operating With a thrust on the trigger operating slide.

In a trigger motor for machine guns, the combination of a plunger, a plunger operating member, a trigger operating slide movable in a path at an angle to the plunger, a cam retainer movable with and by the plunger, and a floating cam movably held in said retainer, actuated by the plunger, and cooperating with the trigger operating slide to thrust the latter outwardly.

4C. In a trigger motor for machine guns, the combination of a plunger, a plunger operating member, a trigger operating slide' movable in a path at an angle to the plunger, and a floating cam actuated by the plunger and operating with a thrust on the trigger operating slide, and yieldable means for restoring said slide and cam to their normal positions.

5. In a trigger motor for machine guns, the combination of a plunger, a plunger operating member, a trigger operating slide movable in a path at an angle to the plunger, and a floating cam actuated by the plunger and operating with a thrust on the trigger operating slide, and a cam stop carried by the plunger.

In testimony whereof we afiix our signatures.

HERBERT O. RUSSELL. LAURENCE J. SCHEBEN. 

